A half-die lip component and a die lip

Abstract

A half-mold lip component and a mold lip, wherein the inner side of the half-mold lip component is provided with a half-molding curved surface for molding the outer surface of a bottle blank portion, and the interior of the half-mold lip component is provided with a cooling water channel for cooling the half-molding curved surface, and the cooling water channel comprises a first water channel, a lower water channel, an upper water channel and a second water channel. By extending the cooling water channel of the half-mold lip component to both sides, the cooling effect of the corresponding position is improved; the cooling water channel in the circumferential direction is continuous and complete, so that the cooling in the circumferential direction is uniform; the position for guiding the cooling water in and out is flexibly set to facilitate the design of the cooling water flow direction; the number of layers of the cooling water channel in the axial direction is flexibly set according to the molding length of the mold lip in the axial direction to meet the cooling requirements of different mold lips; and the mold can be obtained by machining, which reduces the difficulty of implementation.

Description

Technical Field

[0001] The utility model relates to the technical field of die lip structures of injection molds, in particular to a half die lip component and a die lip. Background Art

[0002] In the preform injection molding mold, the die lip is also called the neck ring, which is used to form the mouth of the preform. Usually, the mouth of the preform has radial structures such as support rings and threads. In order to demold the radial structure, the die lip is composed of two mirror-symmetrical half-die lips. When the two half-die lips are combined, they define the outer surface of the mouth of the preform; when the two half-die lips are separated, the mouth of the preform is freed from the axial constraint of the die lip, so that the preform can be demolded in the axial direction.

[0003] As the applicant has previously applied for and disclosed a Chinese utility model patent for a parallel double-layer water channel die lip cooling structure, the patent application number is CN210126242U, which specifically includes a left and right half of a mirror-symmetrical die lip body, a cooling water channel is arranged in the die lip body, a molding surface for bottle mouth molding is provided on one side of the die lip body, the cooling water channel is arranged on the periphery of the molding surface, and the cooling water channel is a double-layer structure.

[0004] like Figure 1 As shown, the first upper channel 22 is connected to the first lower channel 24 via the first parallel channel 23, and the second lower channel 25 is connected to the second upper channel 27 via the second parallel channel 26. In this structure, the cooling water cannot flow completely through the first upper channel 22, the first lower channel 24, the second lower channel 25 and the second upper channel 27, and there is a dead water area, which may result in insufficient cooling along the circumference of the forming surface.

[0005] In this structure, the cooling water first flows through the first upper channel 22, the first parallel channel 23 and the first lower channel 24, and then flows through the second lower channel 25, the second parallel channel 26 and the second upper channel 27. With this structure, the cooling water first flows along one side of the circumference and then flows along the other side of the circumference, which may result in uneven cooling along the circumference of the forming surface.

[0006] For example, the applicant has previously applied for and disclosed a Chinese utility model patent for a lip cooling structure of a preform mold, with patent application number CN214000195U. The structure specifically includes two half-lip components arranged in mirror symmetry, and the two half-lip components are assembled to form a lip body. The middle part of the lip body is provided with a hollow molding surface for forming the preform. A multi-level cooling water channel structure is axially arranged in the preform lip body, and the cooling water channel of the lip plate adopts a linear water channel structure, while the cooling water channel of the second hollow cylinder adopts an arcuate water channel structure.

[0007] like Figure 2As shown, the arc-shaped water channel structure in the structure can enhance cooling for local areas, but due to the inconsistent water channel structures of the upper and lower water channels, the cooling along the axial direction of the forming surface may be uneven. Utility Model Content

[0008] In order to overcome the deficiencies of the prior art, the utility model provides a half die lip component and a die lip.

[0009] The technical solution adopted by the utility model to solve its technical problems is:

[0010] A half-mold lip component, wherein the inner side of the half-mold lip component is provided with a half-molding curved surface for molding the outer surface of a bottle blank portion, and the interior of the half-mold lip component is provided with a cooling water channel for cooling the half-molding curved surface, and the cooling water channel includes a first water channel, a lower water channel, an upper water channel and a second water channel; one end of the first water channel is connected to the outside, and the other end is connected to the lower water channel; the two ends of the lower water channel are respectively connected to the two ends of the upper water channel, and a first water trough and a second water trough are respectively provided at the confluence; one end of the second water channel is connected to the outside, and the other end is connected to the upper water channel.

[0011] In the utility model, the other end of the first water channel is communicated with the middle part of the lower water channel; the other end of the second water channel is communicated with the middle part of the upper water channel.

[0012] Furthermore, the first water channel extends obliquely downward from the upper end surface of the half-mold lip component toward the semi-molding curved surface; the second water channel extends obliquely downward from the upper end surface of the half-mold lip component toward the semi-molding curved surface, and the extension end of the second water channel is located above the extension end of the first water channel.

[0013] In the present invention, the cooling water channel further comprises at least one third-layer water channel, the third-layer water channel comprises two third water channels, one end of the two third water channels are both connected to the first water channel, and the other end is respectively connected to the two sides of the lower-layer water channel, or the other end is respectively connected to the first water trough and the second water trough;

[0014] And / or, the die lip cooling water channel also includes at least one fourth layer water channel, the fourth layer water channel includes two fourth water channels, one end of the two fourth water channels are connected to the second water channel, and the other end is respectively connected to the two sides of the upper layer water channel, or the other end is respectively connected to the first water trough and the second water trough.

[0015] Furthermore, the lower water channel includes a first lower water channel and a second lower water channel, one end of the first lower water channel and the second lower water channel are connected to the extension end of the first water channel, and the other end extends obliquely upward toward the left and right sides of the half-mold lip component respectively; the upper water channel includes a first upper water channel and a second upper water channel, one end of the first upper water channel and the second upper water channel are connected to the extension end of the second water channel, and the other end extends obliquely downward toward the left and right sides of the half-mold lip component respectively.

[0016] Furthermore, when the other ends of the two third water channels are respectively connected to the two sides of the lower water channel, the other ends of the two third water channels are respectively connected to the first lower water channel and the second lower water channel; when the other ends of the two fourth water channels are respectively connected to the two sides of the upper water channel, the other ends of the two fourth water channels are respectively connected to the first upper water channel and the second upper water channel.

[0017] Furthermore, the first process hole and the second process hole are respectively processed inwardly at the end surfaces of both sides of the half-mold lip component, and the first water trough and the second water trough are respectively located on the inner sides of the first process hole and the second process hole; the upper water channel and the lower water channel are respectively defined by the process holes processed inwardly by the first water trough and the second water trough; the first process hole and the second process hole are both provided with plugs.

[0018] Further, the third layer of water channel is defined by process holes machined inwardly from the first water trough and the second water trough; or, the third layer of water channel is defined by a first hole position machined obliquely upward from the lower end surface of the half-mold lip component and a plug that seals the first hole position.

[0019] Further, the fourth water channel is defined by process holes machined inwardly from the first water trough and the second water trough; or, the fourth water channel is defined by a second hole position machined obliquely upward from the lower end surface of the half-mold lip component and a plug sealing the second hole position.

[0020] Based on the above-mentioned half-die lip component, the utility model also provides a die lip, including two half-die lip components as mentioned above, the two half-die lip components are mirror-symmetrical, and are assembled to form the die lip.

[0021] The utility model has the following advantages and beneficial effects: the cooling water channel of the half-die lip component extends to both sides, thereby improving the cooling effect of the corresponding position; the cooling water channel in the circumferential direction is continuous and complete, thereby ensuring uniform cooling in the circumferential direction; the position for guiding the cooling water in and out is flexibly set, thereby facilitating the design of the cooling water flow direction; the number of layers of the cooling water channel in the axial direction is flexibly set according to the forming length of the die lip in the axial direction, thereby meeting the cooling requirements of different die lips; and the cooling water channel can be obtained by machining, thereby reducing the difficulty of implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0023] Figure 1 It is a schematic diagram of the die lip cooling structure of the parallel double-layer water channel in the background technology;

[0024] Figure 2 It is a schematic diagram of the die lip cooling structure of the arc-shaped water channel structure in the background technology;

[0025] Figure 3 Schematic diagram of the half-mold lip component in this embodiment;

[0026] Figure 4 Schematic diagram of the die lip cooling water channel in this embodiment;

[0027] Figure 5 This is a schematic diagram of the structure of the lower waterway in this embodiment;

[0028] Figure 6 Schematic diagram of the structure of the upper waterway in this embodiment. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention, but the present invention is not limited to the following embodiments.

[0030] like Figures 3 to 6As shown, this embodiment discloses a half-mold lip component, including two half-mold lip components assembled with each other, the two half-mold lip components are mirror-symmetrical, the half-mold lip component includes a half-mold lip plate 1, a first half-hollow cylinder 2 and a second half-hollow cylinder 3 protruding from the upper and lower end surfaces of the half-mold lip plate 1 respectively; the inner side of the half-mold lip component is provided with a semi-molding curved surface 4 for bottle blank molding; a mold lip cooling water channel 5 is provided inside the half-mold lip plate 1 around the outer periphery of the semi-molding curved surface 4, and the mold lip cooling water channel 5 includes a first water channel 51, upper water channel, lower water channel and second water channel 56, one end of the first water channel 51 is connected to the outside, and the other end extends obliquely downward from the upper end surface of the half-mold lip plate 1 toward the semi-molding curved surface 4 and connects to the middle of the lower water channel; one end of the second water channel 56 is connected to the outside, and the other end extends obliquely downward from the upper end surface of the half-mold lip plate 1 toward the semi-molding curved surface 4 and connects to the middle of the upper water channel; it can be determined that the extension end 561 of the second water channel is located above the extension end 511 of the first water channel. The two ends of the upper water channel are respectively connected to the two ends of the lower water channel, and the first water trough 52 and the second water trough 53 are formed at the junction; the first water trough 52 is set at the right end surface of the half-mold lip plate 1, and the second water trough 53 is set at the left end surface of the half-mold lip plate 1.

[0031] In this embodiment, the lower water channel includes a first lower water channel 54 and a second lower water channel 55, one end of the first lower water channel 54 and the second lower water channel 55 are connected to the first water channel extension end 511, and the other end extends upwardly and obliquely toward the left and right sides of the half-mold lip component until they are connected to the first water trough 52 and the second water trough 53 respectively; the upper water channel includes a third cooling water channel 57 and a fourth cooling water channel 58, one end of the third cooling water channel 57 and the fourth cooling water channel 58 are connected to the first water trough 52, and the other end extends downwardly and obliquely toward the left and right sides of the half-mold lip component until they are connected to the first water trough 52 and the second water trough 53 respectively.

[0032] In this embodiment, cooling water can flow in from the first water channel 51, and then be split at the first water channel extension end 511, and flow into the first lower water channel 54 and the second lower water channel 55 respectively. The cooling water of the first lower water channel 54 flows into the third cooling water channel 57 through the first water trough 52, and the cooling water of the second lower water channel 55 flows into the fourth cooling water channel 58 through the second water trough 53. The cooling water of the third cooling water channel 57 and the fourth cooling water channel 58 merge at the second water channel extension end 561, and then flow out through the second water channel 56.

[0033] Not limited to the above embodiments, the cooling water can also flow in through the second water channel 56, and then be split at the second water channel extension end 561, and flow into the third cooling water channel 57 and the fourth cooling water channel 58 respectively. The cooling water of the third cooling water channel 57 flows into the first lower water channel 54 through the first water trough 52, and the cooling water of the fourth cooling water channel 58 flows into the second lower water channel 55 through the second water trough 53. The cooling water of the first lower water channel 54 and the second lower water channel 55 merge at the first water channel extension end 511, and then flow out through the first water channel 51.

[0034] In this embodiment, in order to make the cooling water have a better cooling effect on the semi-molded curved surface 4, an angle is formed between the first lower water channel 54 and the second lower water channel 55, and the opening of the angle is toward the semi-molded curved surface 4; an angle is also formed between the third cooling water channel 57 and the fourth cooling water channel 58, and the opening of the angle is toward the semi-molded curved surface 4.

[0035] Preferably, in order to make the cooling water cool the semi-molded curved surface 4 in the circumferential direction more uniform, the first lower water channel 54 and the second lower water channel 55 are symmetrically arranged about the XZ plane; the third cooling water channel 57 and the fourth cooling water channel 58 are symmetrically arranged about the XZ plane; the first water trough 52 and the second water trough 53 are symmetrically arranged about the XZ plane.

[0036] In this embodiment, a first process hole 11 is machined inwardly from one end surface of the half-mold lip component;

[0037] The first water tank 52 is machined inwardly from the first process hole 11;

[0038] The first lower water channel 54 communicating with the first water channel extension end 511 is machined inwardly and downwardly from the first water trough 52;

[0039] The first upper water channel 57 communicating with the second water channel extension end 561 is machined inwardly and upwardly from the first water trough 52;

[0040] A second process hole 12 is machined inwardly from the other end surface of the half lip component;

[0041] The second water tank 53 is machined inwardly from the second process hole 12;

[0042] The second lower water channel 55 communicating with the first water channel extension end 511 is formed from the second water channel 53 inwardly and downwardly.

[0043] The second upper water channel 58 is machined from the second water tank 53 inwardly and upwardly, and is connected to the extended end 561 of the second water channel;

[0044] After processing, the first process hole 11 and the second process hole 12 are sealed with plugs.

[0045] In the present embodiment, the second process hole 12 is processed from the left end surface of the half-mold lip plate 1 toward the interior of the half-mold lip plate 1, the second water trough 53 is processed from the second process hole 12 toward the interior of the half-mold lip plate 1, and the second lower layer water channel 55 and the fourth cooling water channel 58 are respectively processed from the second water trough 53 toward the interior of the half-mold lip plate 1. After processing, the second process hole 12 is sealed with a plug.

[0046] like Figure 5 In this embodiment, the die lip cooling water channel also includes a third layer water channel, and the middle layer water channel includes two third water channels 61, one end of the third water channel 61 is connected to the first water channel 51, and the other end is connected to the first water trough 52 and the second water trough 53 respectively; or the other end is connected to the first lower layer water channel 54 and the second lower layer water channel 55.

[0047] Not limited to the above embodiments, the die lip cooling water channel also includes at least one fourth layer water channel, and the fourth layer water channel includes two fourth water channels 62, one end of the two fourth water channels 62 is connected to the second water channel 56, and the other end is respectively connected to the third cooling water channel 57 and the fourth cooling water channel 58 of the upper layer water channel, or the other end is respectively connected to the first water trough 52 and the second water trough 53.

[0048] In this embodiment, the other ends of the two third water channels 61 are respectively connected to the first lower water channel 54 and the second lower water channel 55:

[0049] The first hole is processed from the lower end surface of the half-mold lip component in an inclined manner upward, one end of the first hole is blocked by a plug, and the other end passes through the first lower water channel 54 and communicates with the first water channel 51, thereby forming one of the third water channels 61;

[0050] The second hole is processed obliquely upward from the lower end surface of the half-mold lip component, one end of the second hole is blocked with a plug, and the other end passes through the second lower water channel 55 and is connected with the first water channel 51, thereby forming another third water channel 61.

[0051] The other ends of the two fourth water channels 62 are respectively connected to the first upper water channel 57 and the second upper water channel 58:

[0052] A third hole is processed from the lower end surface of the half-mold lip component in an inclined manner upward, one end of the third hole is blocked by a plug, and the other end passes through the first upper water channel 57 and communicates with the second water channel 56, thereby forming one of the fourth water channels 62;

[0053] The fourth hole is processed obliquely upward from the lower end surface of the half-mold lip component, one end of the fourth hole is blocked with a plug, and the other end passes through the second upper water channel 58 and is connected with the second water channel 56, thereby forming another third water channel 61.

[0054] Not limited to the above embodiments:

[0055] When the other ends of the two third water channels 61 are connected to the first water tank 52 and the second water tank 53 respectively:

[0056] A third water channel 61 connected to the first water channel 51 is formed from the first water trough 52 inwardly and upwardly, and another third water channel 61 connected to the first water channel 51 is formed from the second water trough 53 inwardly and upwardly;

[0057] When the other ends of the two fourth water channels 62 are connected to the first water tank 52 and the second water tank 53 respectively:

[0058] One of the fourth water channels 62 connected to the second water channel 56 is processed inwardly and upwardly from the first water trough 52 ; another fourth water channel 62 connected to the second water channel 56 is processed inwardly and upwardly from the second water trough 53 .

[0059] In this embodiment, the apertures of the upper water channel and the lower water channel are the same; or based on the balance of inlet and outlet cooling water, the sum of the cross-sectional areas of the upper water channel and the third water channel is equal to the cross-sectional area of ​​the lower water channel; or based on the balance of inlet and outlet cooling water, the sum of the cross-sectional areas of the lower water channel and the fourth water channel is equal to the cross-sectional area of ​​the upper water channel.

[0060] Based on the above-mentioned half-die lip component, this embodiment further provides a die lip, comprising two half-die lip components as mentioned above, the two half-die lip components are mirror-symmetrical and are assembled to form the die lip.

[0061] The above contents described in this specification are merely examples of the present invention. Technicians in the technical field to which the present invention belongs can make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the contents of the present invention specification or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A half-mold lip component, wherein the inner side of the half-mold lip component is provided with a semi-molding curved surface for molding the outer surface of a bottle blank portion, and the interior of the half-mold lip component is provided with a cooling water channel for cooling the semi-molding curved surface, characterized in that: The cooling water channel includes a first water channel, a lower water channel, an upper water channel and a second water channel; one end of the first water channel is connected to the outside, and the other end is connected to the lower water channel; the two ends of the lower water channel are respectively connected to the two ends of the upper water channel, and a first water trough and a second water trough are respectively provided at the confluence; one end of the second water channel is connected to the outside, and the other end is connected to the upper water channel.

2. A half-mold lip component according to claim 1, characterized in that: The other end of the first water channel is communicated with the middle part of the lower water channel; the other end of the second water channel is communicated with the middle part of the upper water channel.

3. A half-mold lip component according to claim 2, characterized in that: The first water channel extends obliquely downward from the upper end surface of the half-mold lip component toward the semi-molding curved surface; the second water channel extends obliquely downward from the upper end surface of the half-mold lip component toward the semi-molding curved surface, and the extension end of the second water channel is located above the extension end of the first water channel.

4. A half-mold lip component according to any one of claims 1 to 3, characterized in that: The cooling water channel further includes at least one third-layer water channel, and the third-layer water channel includes two third water channels, one end of each of the two third water channels is connected to the first water channel, and the other end is respectively connected to both sides of the lower-layer water channel, or the other end is respectively connected to the first water tank and the second water tank; And / or, the die lip cooling water channel also includes at least one fourth layer water channel, the fourth layer water channel includes two fourth water channels, one end of the two fourth water channels are connected to the second water channel, and the other end is respectively connected to the two sides of the upper layer water channel, or the other end is respectively connected to the first water trough and the second water trough.

5. A half-mold lip component according to claim 4, characterized in that: The lower water channel includes a first lower water channel and a second lower water channel, one end of the first lower water channel and the second lower water channel are both connected to the extension end of the first water channel, and the other ends extend upwardly and obliquely toward the left and right sides of the half-mold lip component respectively; the upper water channel includes a first upper water channel and a second upper water channel, one end of the first upper water channel and the second upper water channel are both connected to the extension end of the second water channel, and the other ends extend downwardly and obliquely toward the left and right sides of the half-mold lip component respectively.

6. A half-mold lip component according to claim 5, characterized in that: When the other ends of the two third water channels are respectively connected to the two sides of the lower water channel, the other ends of the two third water channels are respectively connected to the first lower water channel and the second lower water channel; when the other ends of the two fourth water channels are respectively connected to the two sides of the upper water channel, the other ends of the two fourth water channels are respectively connected to the first upper water channel and the second upper water channel.

7. A half-mold lip component according to claim 5, characterized in that: The end surfaces on both sides of the half-mold lip component are respectively provided with a first process hole and a second process hole processed inwardly, and the first water trough and the second water trough are respectively located on the inner sides of the first process hole and the second process hole; the upper water channel and the lower water channel are respectively defined by the process holes processed inwardly by the first water trough and the second water trough; the first process hole and the second process hole are both provided with plugs.

8. A half-mold lip component according to claim 7, characterized in that: The third water channel is defined by process holes machined inwardly from the first water trough and the second water trough; or, the third water channel is defined by a first hole position machined obliquely upward from the lower end surface of the half lip component and a plug sealing the first hole position.

9. A half-mold lip component according to claim 7, characterized in that: The fourth water channel is defined by process holes machined inwardly from the first water trough and the second water trough; or, the fourth water channel is defined by a second hole position machined obliquely upward from the lower end surface of the half-mold lip component and a plug for sealing the second hole position.

10. A die lip, characterized in that: The die lip comprises two half-die lip components according to any one of claims 1 to 9, wherein the two half-die lip components are mirror-symmetrical and are assembled to form the die lip.

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